US6698089B2 - Device for bonding a wire conductor - Google Patents

Device for bonding a wire conductor Download PDF

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Publication number
US6698089B2
US6698089B2 US09/918,126 US91812601A US6698089B2 US 6698089 B2 US6698089 B2 US 6698089B2 US 91812601 A US91812601 A US 91812601A US 6698089 B2 US6698089 B2 US 6698089B2
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United States
Prior art keywords
wire
substrate
wire guide
wire conductor
coil
Prior art date
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Expired - Lifetime, expires
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US09/918,126
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US20010054230A1 (en
Inventor
David Finn
Manfred Rietzler
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Smartrac IP BV
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Individual
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Publication date
Priority claimed from DE19619771A external-priority patent/DE19619771A1/de
Priority claimed from DE1996120242 external-priority patent/DE19620242C2/de
Priority claimed from PCT/DE1997/000261 external-priority patent/WO1997030418A2/de
Application filed by Individual filed Critical Individual
Priority to US09/918,126 priority Critical patent/US6698089B2/en
Publication of US20010054230A1 publication Critical patent/US20010054230A1/en
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Publication of US6698089B2 publication Critical patent/US6698089B2/en
Assigned to ASSA ABLOY IDENTIFICATION TECHNOLOGY GROUP AB reassignment ASSA ABLOY IDENTIFICATION TECHNOLOGY GROUP AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FINN, DAVID
Assigned to SMARTRAC TECHNOLOGY, INC. reassignment SMARTRAC TECHNOLOGY, INC. LICENSE (SEE DOCUMENT FOR DETAILS). Assignors: AMATECH AUTOMATION GMBH
Assigned to SOKYMAT GMBH reassignment SOKYMAT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASSA ABLOY IDENTIFICATION TECHNOLOGY GROUP AB
Assigned to SMARTRAC IP B.V. reassignment SMARTRAC IP B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RIETZLER, MANFRED
Assigned to SMARTRAC IP B.V. reassignment SMARTRAC IP B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SOKYMAT GMBH
Assigned to SMARTRAC IP B.V. reassignment SMARTRAC IP B.V. CHANGE OF ADDRESS Assignors: SMARTRAC IP B.V.
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
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    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
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    • G06K19/07773—Antenna details
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    • G06K19/07779—Antenna details the antenna being of the inductive type the inductive antenna being a coil
    • G—PHYSICS
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    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53235—Means to fasten by deformation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53243—Multiple, independent conductors

Definitions

  • the present invention relates to a process for the contacting of a wire conductor in the course of the manufacture of a transponder unit arranged on a substrate and comprising a wire coil and a chip unit and a device for implementing the process and a device for the wiring of a wire-shaped conductor on a substrate.
  • the contacting of the ends of the coil with the terminal areas of the chip unit proves to be a particular problem.
  • the terminal areas of a chip unit which as a rule are of square or approximately square design, customarily have an edge length of about 100 to 150 ⁇ m
  • coil wire particularly for the purpose of forming low-frequency coils, use is made of a copper wire having a diameter which as a rule amounts to around 50 ⁇ m-.
  • the chip unit is equipped with additional contact conductors for the purpose of making contact with the enlarged terminal areas of the substrate, in the case of the manufacturing process known from WO 91/16718 a total of at least three contacting steps are required in order finally to establish an electrically conductive contact between the terminal areas of the chip unit and the wire coil.
  • the object underlying the invention is therefore to propose a process and also a device enabling direct contacting of wire ends on the terminal areas of a chip unit.
  • the coil wire is guided in a first process step via the assigned terminal area of the chip unit, or a space that is intended to accept this terminal area, and is fixed to the substrate.
  • a first process step via the assigned terminal area of the chip unit, or a space that is intended to accept this terminal area, and is fixed to the substrate.
  • the coil substrate which is used in any case as substrate for the wire coil and which, for example in the case where the transponder unit is intended to serve for the manufacture of a chip card, is formed by means of a plastic support sheet corresponding to the dimensions of the chip card, serves virtually as a contacting or positioning aid for the relative positioning of the ends of the coil in relation to the terminal areas of the chip unit.
  • the chip unit may either be arranged in a recess in the substrate provided for this purpose or may be provided on the surface of the substrate.
  • the first alternative affords the possibility of arranging the chip unit in the recess optionally prior to fixation of the wire conductors or of introducing the chip unit into the recess only after fixation of the wire conductors, in order subsequently to implement the actual contacting of the wire conductors on the terminal areas.
  • the process according to the invention consequently enables simplified contacting of the wire conductors with the terminal areas of the chip unit.
  • the wire conductor is subjected to the action of ultrasound in a direction transverse to the wiring plane, and the transverse movement of the wiring device induced by the action of ultrasound is superimposed on the wiring movement extending in the wiring plane.
  • the superimposition of the wiring movement together with the transverse movement countersinking the cross-section of the wire conductor in the surface of the substrate or bringing it into close contact with the latter enables continuous operation of the wiring device, so that the wire conductor is capable ofbeing connected to the surface of the substrate not only in the region of definite connecting points but over any length without the actual wiring movement having to be interrupted in the process.
  • the transverse movement induced by ultrasound proves to be particularly effective during the at least partial countersinking or the close contacting of the cross-section of the wire, since the movement induced by the ultrasound extends in the direction of sinking and not transversely thereto, as is the case with the process described in the introduction.
  • transverse movement induced by ultrasound takes place along a transverse-movement axis that is variable as regards its angle in relation to the axis of the wiring movement.
  • transverse-movement axis that is variable as regards its angle in relation to the axis of the wiring movement.
  • the ultrasonic frequency and/or the angle between the axis of the wiring movement and the transverse-movement axis may also be varied.
  • An interruption of the exposure of the wire conductor to ultrasound also proves to be advantageous for the purpose of crossing an already wired section of wire in the crossing region, whereby in addition the wire conductor in the crossing region is guided in a crossing plane that is spaced from the wiring plane. This ensures that a crossing of wire conductors becomes possible without it being possible for damage to occur in the process as a result of collision of the wire conductors, which could possibly result in destruction of the insulation of the wire conductors.
  • connection between the wire conductor and the substrate material can be effected via a more or less positive inclusion of the cross-section of the wire conductor in the surface of the substrate—for instance, when the substrate is formed from a thermoplastic material—or by means of a predominantly close-contact fixing of the wire conductor on the surface of the substrate, for instance by bonding the wire conductor together with the surface of the substrate.
  • the substrate material is a fleece-type or woven-fabric-type support.
  • the connection of the wire conductor to the surface of the substrate via a layer of adhesive between the wire conductor and the surface of the substrate has proved to be advantageous.
  • the wire conductor comes into close contact against the surface of the substrate in a peripheral region via the layer of adhesive.
  • the layer of adhesive may be formed from the surface coating.
  • thermocompression process for connecting the initial region of the coil and the final region of the coil to the terminal areas of the chip unit has proved to be particularly effective.
  • a further increase in the effectiveness of the application of the process as described above is achieved if a plurality of card modules are manufactured at the same time in such a way that in a feed phase a plurality of substrates arranged collected together in a yield are supplied to a card-module production device comprising a plurality of wiring devices and connecting devices and subsequently in the wiring phase a plurality of coils are formed simultaneously on substrates arranged in a row, then in the connection phase a plurality of chip units are connected via their terminal areas to the coils and finally in a separation phase a separation of the card modules from the composite yield takes place.
  • the process serves to wire a wire-shaped conductor on a substrate by means of a wiring device that subjects the wire conductor to ultrasound with a view to manufacturing a ribbon cable, whereby a number of wiring devices corresponding to the number of cable conductors desired is arranged transversely in relation to the longitudinal axis of a ribbon-shaped substrate and a relative movement between the substrate and the wiring devices takes place in the direction of the longitudinal axis of the substrate.
  • the wire conductor and the terminal areas of the chip unit which are customarily constituted by aluminium surfaces
  • the preparatory treatment of the aluminium surface is virtually integrated into the actual connecting operation—that is to say, the contacting of the wire conductor with the terminal areas by virtue of the wire conductor being connected to the terminal areas by means of a connecting instrument taking the form of an ultrasonic instrument.
  • an oxide layer disposed on the aluminium surface is eliminated mechanically by subjecting the oxide layer to the ultrasonic vibrations of the ultrasonic instrument.
  • This manner of cleansing the aluminium surfaces of the oxide layer which takes place substantially at the same time as the actual connecting operation, has the particular advantage that with regard to shielding the connecting points from environmental influences—by creating an inert or reducing atmosphere, for example—it is possible to dispense with special measures intended to prevent the formation of a fresh oxide layer prior to implementation of the connecting operation.
  • the connecting operation itself can be carried out in an inert or reducing atmosphere.
  • etching processes that have great selectivity proves to be particularly advantageous for the purpose of cleansing the aluminium surfaces pertaining to the terminal areas of oxide layers.
  • An example of dry-etching processes is ion-beam etching.
  • processes that can be implemented easily, such as wet etching or oxide-layer removal by laser treatment, in particular by excimer-laser treatment, is also advantageous.
  • the aluminium surface With a view to preventing renewed oxidation of the aluminium surface there is also the possibility of providing the aluminium surface with a multilayered contact metallisation having a zincate layer applied to the aluminium surface by way of intermediate layer and having an interconnect layer which is disposed on said zincate layer and which is provided for making contact with the wire conductor.
  • the zincate layer serves primarily to eliminate the oxide layer on the aluminium surface
  • the interconnect layer which may for instance consist of nickel or palladium or corresponding alloys, serves to improve the adhesion to the copper wires which are used as a rule by way of wire conductors.
  • connection the wire conductor may be fixed on the substrate via an adhesive layer which is provided on the sheet of paper and which adheres to the wire conductor, or even via an adhesive layer which is provided on the wire conductor itself, for instance a layer of baking lacquer.
  • the wire conductor is fixed on the substrate by means of a wiring instrument which is employed in any case for the coil-shaped arrangement of the wire conductor on the substrate and which enables a continuous or intermittent connection of the wire conductor to the surface of the substrate.
  • a wiring instrument which is employed in any case for the coil-shaped arrangement of the wire conductor on the substrate and which enables a continuous or intermittent connection of the wire conductor to the surface of the substrate.
  • an ultrasonic instrument is employed which enables an at least partial embedding of the cross-section of the wire conductor into the surface of the substrate and hence enables fixation with good adhesion.
  • a particularly good fixation of the wire conductor on the surface of the substrate and the establishment of a particularly reliable connection of the wire conductor to the terminal areas of the chip unit is possible if the ultrasonic instrument which is used for the wiring and fixation of the wire conductor on the substrate brings about a vibrational loading of the wire conductor transverse to the longitudinal axis of the wire conductor and transverse to the surface of the substrate, and if the ultrasonic instrument which is used for connecting the wire conductor to the terminal areas brings about a vibrational loading of the wire conductor in a plane substantially parallel to the substrate and transverse to the longitudinal axis of the wire conductor.
  • the wiring device for wiring a wire-shaped conductor on a substrate by means of ultrasound comprises a wire guide and an ultrasonic generator, whereby the ultrasonic generator is connected to the wire guide in such a way that the wire guide is stimulated to execute ultrasonic vibrations in the direction of the longitudinal axis.
  • the ultrasonic instrument is coupled to a wire-laying instrument.
  • a particularly simple configuration of the device becomes possible if the ultrasonic oscillator of the ultrasonic instrument serves simultaneously for ultrasonic loading of the wiring instrument, for instance by the ultrasonic oscillator being arranged in such a way that the axis of its effective direction is variable.
  • the wiring device is equipped with a wire-guidance capillary which at least in the region of a wire-guide nozzle extends in the wire guide parallel to the longitudinal axis. In this manner it is ensured that in the region of the wire-guide nozzle the axial advancing movement of the wire conductor is not impaired by ultrasonically induced transverse loads. Rather the ultrasonic loading extends in the longitudinal direction of the wire.
  • the wire guide comprises, spaced from the wire-guide nozzle, at least one wire-feed channel extending obliquely in relation to the longitudinal axis of the wire.
  • FIG. 1 is a schematic representation of the wiring of a wire conductor on a substrate by means of ultrasound;
  • FIG. 2 is an electron micrograph for the purpose of representing a wire conductor embedded in the substrate
  • FIG. 3 is a wiring device for wiring a wire conductor by means of ultrasound
  • FIG. 4 is a wire conductor wired in coil form on a substrate with ends guided away via a recess in the wire conductor;
  • FIG. 5 is a coil configuration that is varied in comparison with FIG. 4 with wire ends guided away via a substrate recess;
  • FIG. 6 is the placement of a chip unit in the substrate recess represented in FIG. 5;
  • FIG. 7 is the connection of the wire ends represented in FIG. 5 to terminal areas of the chip unit which is inserted in the recess;
  • FIG. 8 is a production device for the manufacture of card modules
  • FIG. 9 is the wiring of a wire conductor by means of ultrasound on a rotationally symmetrical winding form
  • FIG. 10 is a moving coil of a loudspeaker unit manufactured by means of ultrasonic wiring on a cylindrical winding form;
  • FIG. 11 is a longitudinal-section representation of a ribbon cable equipped with wire conductors
  • FIG. 12 is another wiring device for wiring a wire conductor by means of ultrasound
  • FIG. 13 is a top view of a card inlet pertaining to a chip card with a transponder unit formed from a wire coil and a chip unit;
  • FIG. 14 is a sectional representation of the card inlet represented in FIG. 13 according to the course of the line ofintersection II—II, for the purpose of elucidating the manufacturing process;
  • FIG. 15 is another sectional representation of the card inlet represented in FIG. 13 according to the course of the line of intersection III—III;
  • FIG. 16 is a representation corresponding in its view to FIG. 14 for the purpose of elucidating an alternative procedure with subsequent application of a chip unit;
  • FIG. 17 is a view showing the contacting of the chip unit applied subsequently according to FIG. 17;
  • FIG. 18 is a possible contact metallization of a terminal area of a chip with contacting according to the process represented in FIG. 17;
  • FIG. 19 is another possible contact metallization of a terminal area of a chip.
  • FIG. 20 is a representation corresponding in its view to FIG. 14 of a transponder unit arranged on a coil substrate.
  • FIG. 1 shows, in a schematic representation, the wiring of a wire conductor 20 on a substrate 21 by means of a wiring device 22 with a wire guide 23 which is subjected to the action of ultrasound.
  • the wiring device 22 represented in FIG. 1 is designed to be capable of being displaced along three axes and is subjected to the action of ultrasound which stimulates the wire guide 23 to execute oscillating transverse movements (arrow 24 ), which in the example represented in FIG. 1 are aligned perpendicular to a wiring plane 28 spanned by lateral edges 25 , 26 of a substrate surface 27 .
  • the wire conductor 20 is moved out of a wire-guide nozzle 30 while executing a continuous advancing movement in the direction of the arrow 29 , whereby at the same time the wire guide 23 executes a wiring movement 29 which extends parallel to the wiring plane 28 and which in FIG. 1 can be retraced from the course of the wire-conductor section already wired on the substrate 21 .
  • the oscillating transverse movement 24 is superimposed. This results in an impinging or impacting of the wire-guide nozzle 30 on the wire conductor 20 which is repeated in rapid succession corresponding to the ultrasonic frequency, leading to a compression and/or displacement of the substrate material in the region of a contact point 32 .
  • FIG. 2 shows in a sectional representation, which corresponds roughly to the course of the line of intersection II—II indicated in FIG. 1, the embedded arrangement of the wire conductor 20 in the substrate 21 .
  • the substrate represented here is a PVC sheet, whereby for the purpose of embedding the wire conductor 20 the wire conductor is subjected via the wiring device 22 to, for example, an ultrasonic power output of 50 W and an ultrasonic frequency of 40 kHz.
  • the contact force with which the wire-guide nozzle 30 is caused to abut the substrate surface 27 may, in the case of the aforementioned substrate material, lie in the range between 100 and 500 N.
  • an embedding of the wire conductor 20 into the substrate 21 was obtained substantially by virtue of a compression of the substrate material in a compression region 33 of the substrate material which here is crescent-shaped.
  • the wiring principle represented in FIG. 1 can be universally employed. For instance, departing from the use elucidated in detail below in connection with the manufacture of a card module (FIGS. 4 to 7 ), the principle may also find application in connection with the wiring of wire coils in plastic casings, for instance in order to form an aerial for a cordless telephone (mobile phone) or in order to form a measuring coil of a sensor.
  • FIG. 3 shows the wiring device 22 in an individual representation with an ultrasonic generator 34 which is arranged coaxially with respect to the wire guide 23 and is rigidly connected to the latter in a connecting region 35 .
  • Overall the wiring device 22 represented in FIG. 3 is of rotationally symmetrical construction.
  • the wire guide 23 comprises a central longitudinal bore 36 which in the region of the wire-guide nozzle 30 merges with a wire capillary 37 which in comparison with the longitudinal bore 36 has a narrowed diameter that is matched to the diameter of the wire conductor 20 .
  • the wire-guidance capillary 37 serves primarily to be able to align the wire conductor exactly in the wiring plane 28 (FIG. 1 ).
  • wire-feed channels 38 , 39 which extend obliquely downwards in the direction of the wire-guide nozzle 30 .
  • the wire-feed channels 38 , 39 serve for lateral introduction of the wire conductor 20 into the wire guide 23 , so that the wire conductor 20 , as represented in FIG. 3, extends laterally on a slant into the wire-feed channel 38 , through the longitudinal bore 36 and, guided out of the wire-guidance capillary 37 , through the wire guide 23 .
  • the multiple arrangement of the wire-feed channels 38 , 39 permits selection of the wire-supply side of the wire guide 23 that is most favourable in the given case.
  • the wire-guide nozzle 30 is of convex construction in the region of a wire outlet 40 in order to enable a deflection of the wire conductor 20 that is as non-damaging as possible in the region of the contact point 32 (FIG. 1) or in the region of the wire outlet 40 in the course of the wiring operation represented in FIG. 1 .
  • FIG. 4 shows a wire conductor 20 which, for the purpose of forming a coil 41 which in this case takes the form of a high-frequency coil, is wired on a substrate 42 .
  • the coil 41 here has a substantially rectangular configuration with an initial coil region 43 and a final coil region 44 which are guided away via a window-shaped substrate recess 45 .
  • the initial coil region 43 and the final coil region 44 are in parallel alignment with a main coil strand 46 which they accept between them in the region of the substrate recess 45 .
  • the ultrasonic loading of the wire conductor 20 is interrupted while the latter is being guided away via the substrate recess in the course of the wiring operation, in order on the one hand to ensure no impairment of the alignment of the wire conductor 20 in an unrestrained region 47 between the recess edges 48 , 49 located opposite one another and on the other hand in order to rule out stressing of the connection between the wire conductor 20 and the substrate 42 in the region of the recess edges 48 , 49 by tensile stresses on the wire conductor 20 as a consequence of ultrasonic loading.
  • FIG. 5 shows, in a configuration that is modified in comparison with FIG. 4, a coil 50 with an initial coil region 51 and a final coil region 52 which are guided, angled in relation to a main coil strand 53 , into an interior region of the coil 50 .
  • the coil 50 is arranged on a substrate 55 which comprises a substrate recess 56 in the interior region 53 of the coil 50 .
  • the final coil region 52 has to be guided away beforehand in a crossing region 57 via the main coil strand 44 .
  • the ultrasonic loading of the wire conductor 20 is interrupted in the crossing region 57 . Furthermore, the wire guide 23 is slightly raised in the crossing region 57 .
  • FIG. 6 shows, in a view of the substrate 55 corresponding to the course of the line of intersection VI—VI in FIG. 5, the placement of a chip unit 58 in the substrate recess 56 , wherein terminal areas 59 of the chip unit 58 are caused to abut the initial coil region 51 and the final coil region 52 .
  • FIG. 7 shows the subsequent connection of the terminal areas 59 of the chip unit 58 to the initial coil region 51 and to the final coil region 52 by means of a thermode 60 which under the influence of pressure and temperature creates a connection by material closure between the wire conductor 20 and the terminal areas 59 , as an overall result of which a card module 64 is formed.
  • the chip unit 58 represented in FIGS. 6 and 7 it may also be a question, as in all other remaining cases where mention is made of a chip unit, either of an individual chip or of a chip module which, for instance, comprises a chip which is contacted on a chip substrate or even a plurality of chips.
  • the connection represented in FIGS. 6 and 7 between the coil 50 and the terminal areas 59 is not restricted to the connection to one chip but applies generally to the connection of electronic components comprising terminal areas 59 to the coil 50 . In this case it may be also a question, for example, of capacitors.
  • the substrate recess 56 is so dimensioned that it substantially accepts the chip unit 58 .
  • the chip unit 58 may be equipped on its contact side 61 comprising the terminal areas 59 with an alignment aid 62 which here is constructed in the manner of a bridge.
  • the alignment aid 62 is dimensioned so as to correspond to the spacing a which the initial coil region 51 and the final coil region 52 have from one another in the region of the substrate recess 56 (FIG. 5 ).
  • FIG. 8 shows a production device 63 that serves for the manufacture of card modules 64 that are used as semi-finished products in the manufacture of chip cards.
  • the card modules 64 manufactured by means of the production device 63 here have, by way of example, the structure represented in FIGS. 5, 6 and 7 with, in each instance, a coil 50 and a chip unit 58 arranged on a common substrate 55 .
  • the production device 63 represented in FIG. 8 comprises five stations, namely a feed station 65 , a wiring station 66 , an assembly station 67 and a connection station 68 as well as an extraction station 69 .
  • the production device 63 there is supplied to the production device 63 a so-called yield 70 which exhibits in a common composite a plurality of substrates 55 —here for representational reasons only twenty—which are connected to one another via points of separation which are not represented here in any detail.
  • the yield 70 is supplied by means of a transport instrument 71 to the wiring station 66 which comprises at a portal 73 , which extends transversely in relation to the production direction 72 and is capable of being displaced in the production direction 72 , four identical wiring devices 22 arranged in a row.
  • the wiring devices 22 are supplied with the wire conductor 20 via four wire-conductor coils 74 .
  • the wiring devices 22 which are capable of being displaced along the portal 73 , are displaced appropriately in the wiring plane 28 (FIG. 1 ).
  • the yield 70 with the coils 50 formed thereon is moved on further to the assembly station 67 .
  • the connection station 68 is combined with the assembly station 67 in such a way that, on a portal 75 which is capable of being displaced in the production direction 72 , both an assembly device 76 and a connecting device 77 are arranged so as to be capable in each instance of being displaced in the longitudinal direction of the portal 75 .
  • the assembly device 76 serves for extraction of chip units 58 from a chip-unit reservoir 78 and for subsequent placement of the chip units 58 in the manner represented in FIG. 6 .
  • the connecting device 77 serves to bring the terminal areas 59 of the chip units 58 into contact with the coil 50 , as represented in FIG. 7 .
  • the yield 70 is moved on further into the extraction station 69 .
  • an extraction of the yield 70 takes place with subsequent separation of the substrates 55 , or firstly a separation of the substrates 55 —that is to say, a dispersion of the composite yield—and subsequently the extraction of the individual substrates 55 which now take the form of card modules 64 .
  • FIG. 9 shows a particular application of the process elucidated by way of example on the basis of FIG. 1 for the manufacture of a cylindrical formed coil 79 wherein the substrate takes the form of a cylindrical winding support 80 and the wiring or embedding of the wire conductor 20 on the winding support 80 is effected in the course of rotation 81 of the winding support 80 with simultaneous superimposed translation 82 of the wiring device 22 .
  • the winding support 80 may also take the form of a cylindrical extension of a plastic vibrating diaphragm 83 of a loudspeaker unit 84 , so that in the manner represented in FIG. 9 a moving coil 85 is capable of being manufactured such as serves, in combination with a permanent magnet indicated in FIG. 10, to form a loudspeaker unit 84 .
  • FIG. 11 shows, by way of another possible application of the process that has been described, a ribbon-cable section 85 with a substrate 86 taking the form of a ribbon cable which, adjoined on both sides by points of separation 87 , is provided with substrate recesses 88 arranged in a row transverse to the longitudinal direction of the substrate 86 .
  • a plurality of wire conductors 20 which are wired on the substrate 86 in the manner represented by way of example in FIG. 1 .
  • the wire conductors 20 are guided away in the region of the points of separation 87 via the substrate recesses 88 .
  • the points of separation serve for the definition of predetermined ribbon-cable pieces 89 , whereby the substrate recesses 88 are then arranged in each instance at one end of a piece of ribbon cable. In particularly favourable manner this results in contacting possibilities for connector plugs or connector sockets with the wire conductors 20 without the wire conductors having firstly to be exposed for this purpose.
  • the substrate recesses 88 are introduced into the substrate 86 in a stamping process with an appropriately formed punch tool, whereby as a result of the spacing of the stampings the spacing of the points of separation 87 is preset.
  • the appropriately prepared continuous substrate is covered with the wire conductors 20 , whereby in this case a number of wiring devices corresponding to the number of wire conductors 20 are arranged above the substrate which is moved longitudinally.
  • FIG. 12 shows, in a modification of the wiring device 22 represented in FIG. 3, a wiring device 91 which, like the wiring device 22 , comprises an ultrasonic generator 34 .
  • a wiring device 91 which, like the wiring device 22 , comprises an ultrasonic generator 34 .
  • the profiled end 93 is provided with a concave recess which is not represented in FIG. 12 in any detail and which enables partial encompassing of the wire conductor 20 .
  • a wire guide 94 is provided which, in the case of the embodiment example represented here, is formed from a guidance tube 95 arranged laterally on the ultrasonic generator 34 with an elbow nozzle 96 which is formed in the direction of the profiled end 93 and which enables lateral supply, here directed obliquely downwards, of the wire conductor 20 in the direction of the profiled end 93 .
  • the wire conductor 20 can be guided between the profiled end 93 of the vibrating punch 92 and the surface of the substrate 21 in order to enable the previously described connection to, or alternatively wiring on, or in, the surface of the substrate 21 .
  • the wiring device comprises a wire coil 99 which is capable of rotating about a winding axis 98 arranged transverse to the punch axis 97 and which serves to supply the wire conductor 20 into the wire guide 95 .
  • the wiring device 91 comprises, coaxially with respect to the punch axis 97 , a pivotal axis 100 .
  • wire-shaped conductor and “wire conductor” generally designate conductors for the transmission of signals that have a defined longitudinal extent and therefore with respect to their external shape are of wire-shaped construction.
  • the term “wire conductor” is not restricted to metallic conductors but also designates conductors made of other materials, for example light guides made of glass fibre, or even conductors that serve for the guidance of flowing media.
  • the conductors used are provided with an adhesive surface it is also possible for the conductors to be disposed in multiple layers located on top of one another, the lowest layer being connected to the surface of the substrate and other layers being connected in each instance to conductor layers arranged below them.
  • the adhesion may, for example, be obtained via a coating of the conductor with baking lacquer which with regard to its adhesive effect is capable of being activated by means of the action of heat, or via an appropriate plastic coating.
  • FIG. 13 a card inlet pertaining to a chip card with a transponder unit formed from a wire coil and a chip unit;
  • FIG. 14 a sectional representation of the card inlet represented in FIG. 13 according to the course of the line of intersection II—II, for the purpose of elucidating the manufacturing process;
  • FIG. 15 another sectional representation of the card inlet represented in FIG. 13 according to the course of the line of intersection III—III;
  • FIG. 16 a representation corresponding in its view to FIG. 14 for the purpose of elucidating an alternative procedure with subsequent application of a chip unit;
  • FIG. 17 the contacting of the chip unit applied subsequently according to FIG. 17;
  • FIG. 18 a possible contact metallisation of a terminal area of a chip with contacting according to the process represented in FIG. 17;
  • FIG. 19 another possible contact metallisation of a terminal area of a chip
  • FIG. 20 a representation corresponding in its view to FIG. 14 of a transponder unit arranged on a coil substrate.
  • FIG. 13 shows a chip-card inlet 110 which, with a view to the manufacture of a chip card by way of end product which is not represented in any detail here, is provided with bilateral surface layers which as a rule are applied onto the chip-card inlet in the form of laminated layers covering the surface.
  • the chip-card inlet 110 consists here of a coil substrate 111 formed from plastic material, onto which a wire coil 112 is applied with the aid of wire-laying technology. To this end a wire conductor 113 is wired on the surface of the coil substrate 111 by means of a wiring instrument which is not represented in any detail in FIG. 13 and is partially embedded into the coil substrate 111 by ultrasonic loading, as can be gathered from FIG. 14 .
  • a recess 114 which serves to accept a chip unit constituted here by an individual chip 115 .
  • the chip unit may, as in the present case, be constituted merely by the chip 115 .
  • the chip unit it is further possible for the chip unit to be formed from a so-called “chip module” which accepts one or even several cased chips.
  • the wire conductor 113 which is wired for the purpose of forming the wire coil 112 on the coil substrate 111 is contacted with wire ends 116 , 117 on an assigned terminal area 118 and 119 , respectively, of the chip 115 .
  • a process for implementing the contacting of the wire ends 116 , 117 with the terminal areas 118 , 119 of the chip 115 will be elucidated in more detail below with reference to FIG. 14 .
  • the process represented in detail in FIG. 14 is effected in two successive phases, which here for the purpose of differentiation are denoted by I and II.
  • I the wire end 116 illustrated here is fixed on the coil substrate 111 , whereby simultaneously as a consequence of the aforementioned wiring process for applying the wire conductor 113 onto the surface of the coil substrate 111 the wire conductor 113 is guided away via the chip 115 that is received in the recess 114 .
  • the coil substrate 111 is arranged on a table 120 together with the chip 115 received in the recess 114 .
  • This application of the wire conductor 113 on the surface of the coil substrate 111 which is described by the term wirings, is firstly effected in the region designated by Ia to the left of the recess 114 , subsequently the wire conductor 113 is guided away with the wire guide 123 via the chip 115 which is arranged in the recess 114 , in order finally to continue with the fixation of the wire conductor 113 on the right-hand side of the recess 114 in the region headed by Ib by means of ultrasonic loading of the wire conductor via the vibrating punch 122 .
  • FIG. 15 shows clearly that, in contrast with the vibrational loading 128 induced by ultrasound which is effected in the longitudinal direction of the vibrating punch 122 of the ultrasonic instrument 121 , the vibrational loading 129 of the vibrating punch 127 induced by ultrasound is effected transverse to the longitudinal direction of the wire conductor 113 and parallel to the surface of the coil substrate 111 .
  • a slight contact pressure 130 is superimposed, so that the wire conductor 113 which is received in guided manner in the profiled end 126 of the vibrating punch 127 is moved back and forth in oscillating manner under pressure in the region of the terminal area 118 above the latter.
  • the recess 114 is arranged so as to be larger than the corresponding dimensions of the chip 15 , so that a circumferential gap 130 results between the chip 115 and the edges of the recess 114 .
  • a virtually “floating acceptance” of the chip 115 in the recess 114 is possible, whereby, although said chip is substantially defined in its location relative to the coil substrate 111 , it is able to execute minor relative movements.
  • the chip can at least partially avoid the pressure loads associated with the laminating operation and consequently the risk of damage to the chip in the course of the laminating operation is significantly reduced.
  • the wire conductor 113 can be tracked via a corresponding transverse-movement axis 131 of the ultrasonic instrument 125 .
  • FIGS. 16 and 17 A way of proceeding that is slightly varied in comparison with FIGS. 14 and 15 is represented in FIGS. 16 and 17, wherein only after fixation of the wire conductor 113 on the surface of the coil substrate 111 on both sides of the recess 114 is a chip 132 introduced into said recess.
  • the chip 132 In order simultaneously with the introduction of the chip 132 into the recess 114 to enable a positioning that is suitable for the subsequent contacting of the wire conductor 113 with an assigned terminal area 133 of the chip 132 , the latter is equipped on its contact side 134 with bridge-type alignment aids 135 , in each instance arranged adjacent to a terminal area 133 , which provide for correct relative positioning via guide bevels 136 .
  • FIG. 17 shows, in addition, a thermode instrument 137 which can be employed as an alternative to the ultrasonic instrument 125 by way of a connecting instrument which enables a connection of the wire conductor under pressure and temperature loading to the assigned terminal area 133 .
  • a thermode instrument 137 which can be employed as an alternative to the ultrasonic instrument 125 by way of a connecting instrument which enables a connection of the wire conductor under pressure and temperature loading to the assigned terminal area 133 .
  • the terminal areas 133 are provided with a contact metallisation 138 (FIG. 18) or 139 (FIG. 19 ).
  • the contact metallisations 138 , 139 comprise, in corresponding manner, a zincate layer serving as intermediate layer 140 which serves as foundation for a nickel layer 141 applied to it in the case of the contact metallisation 138 , or a palladium layer 142 in the case of the contact metallisation 139 .
  • the nickel layer 141 is also provided with a gold coating 145 .
  • layer thicknesses of the layers that are applied to the aluminium coating about 1 to 2 .mu.m in thickness, of the terminal area 133 are given below by way of examples:
  • gold coating: d 100-150 nm.
  • FIG. 20 finally shows, in a variant of the representation according to FIG. 13, the possibility of applying the process described above also for the direct contacting of the wire conductor 113 with assigned terminal areas 118 and 119 of the chip 115 if the chip 115 is not arranged in a recess but rather on the surface of a substrate 143 .
  • the substrate 143 represented in FIG. 20 it may be a question, for example, of a paper substrate or of any other substrate. Conforming with the process elucidated with reference to FIGS. 14 and 15, here too on both sides of an acceptance region or arrangement region 144 for the chip 115 a fixation is provided of the wire conductor 113 into the surface regions of the substrate 143 , here designated in simplified manner by Ia and Ib.
  • the embodiment represented in FIG. 20 appears to be particularly suitable for use as a transponder arrangement in connection with the identification of luggage.
  • transponder units consisting of a coreless wire coil and a chip unit
  • use may of course also be made of ferrite-core coils such as are employed, for example, for the manufacture of animal transponders.
  • the chip or the chip unit can be made thinner prior to or after the application on, or in, the substrate, in order to-increase the flexibility of the chip and, where appropriate, to adapt the chip to the substrate as regards its bending behavior.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Wire Bonding (AREA)
  • Windings For Motors And Generators (AREA)
  • Credit Cards Or The Like (AREA)
US09/918,126 1996-02-12 2001-07-30 Device for bonding a wire conductor Expired - Lifetime US6698089B2 (en)

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Application Number Priority Date Filing Date Title
US09/918,126 US6698089B2 (en) 1996-02-12 2001-07-30 Device for bonding a wire conductor

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
DE19604840.0 1996-02-12
DE19604840 1996-02-12
DE19604840 1996-02-12
DE19619771A DE19619771A1 (de) 1996-02-12 1996-05-17 Verfahren und Vorrichtung zur Verlegung eines Drahtleiters auf einem Substrat sowie hiermit hergestellte Substrate
DE19619771 1996-05-17
DE1996120242 DE19620242C2 (de) 1996-05-20 1996-05-20 Verfahren und Vorrichtung zur Kontaktierung eines Drahtleiters bei der Herstellung einer Transpondereinheit
DE19620242 1996-05-20
PCT/DE1997/000261 WO1997030418A2 (de) 1996-02-12 1997-02-12 Verfahren und vorrichtung zur kontaktierung eines drahtleiters
US09/117,970 US6233818B1 (en) 1996-02-12 1997-02-12 Method and device for bonding a wire conductor
US36814999A 1999-08-04 1999-08-04
US09/918,126 US6698089B2 (en) 1996-02-12 2001-07-30 Device for bonding a wire conductor

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US36814999A Continuation 1996-02-12 1999-08-04

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KR100373063B1 (ko) 2003-05-12

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